ASTM WK33781

    Work Item: ASTM WK33781 - Revision of F1868 - 09 Standard Test Method for Thermal and Evaporative Resistance of Clothing Materials Using a Sweating Hot Plate

    (What is a Work Item?)

    Active Standard: F1868 - 14

    Developed by Subcommittee: F23.60 | Committee F23 | Contact Staff Manager

    1. Rationale

    ASTM F1868-09 references a calibration fabric for use in Part C of the standard. The original supply of this fabric was included in a round-robin study to develop linear regressions for Rcf and Ref which formed the basis for the currently published slope and 4-layer measurements in the standard. This bolt of calibration fabric has since been fully consumed, and replaced with a new supply of like material from the same manufacturer. A one-time procedure has been proposed to pre-age this new fabric before initial use, and several labs have indicated willingness to evaluate this procedure and test the new material per the Part C protocol to confirm the new material is within acceptable limits. The results of this Work Item will be a revision to ASTM F1868 to incorporate the pre-aging procedure, and to generate a report summarizing the data from participating labs.


    evaporative resistance; insulation; permeability index; thermal resistance; total heat loss; Clothing; Evaporators/evaporation; Heat flow; Impedance; Leather; Moisture flow; Protective clothing; Steady-state testing; Sweating hot plate; Thermal resistance/resistivity ;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Richard Burke

    Draft Under Development